mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-08-20 02:42:27 +00:00
add runtime validator contract call
This commit is contained in:
Nguyen Sy Thanh Son
parent
8dada6b6ec
commit
d9ea2dedb0
3 changed files with 316 additions and 0 deletions
25
core/vm/validator/env.go
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25
core/vm/validator/env.go
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package validator
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/vm"
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)
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func NewEnv(cfg *Config) *vm.EVM {
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context := vm.Context{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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GetHash: func(uint64) common.Hash { return common.Hash{} },
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Origin: cfg.Origin,
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Coinbase: cfg.Coinbase,
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BlockNumber: cfg.BlockNumber,
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Time: cfg.Time,
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Difficulty: cfg.Difficulty,
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GasLimit: cfg.GasLimit,
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GasPrice: cfg.GasPrice,
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}
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return vm.NewEVM(context, cfg.State, cfg.ChainConfig, cfg.EVMConfig)
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}
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156
core/vm/validator/runtime.go
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156
core/vm/validator/runtime.go
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@ -0,0 +1,156 @@
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package validator
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import (
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"math"
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"math/big"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/params"
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)
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// Config is a basic type specifying certain configuration flags for running
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// the EVM.
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type Config struct {
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ChainConfig *params.ChainConfig
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Difficulty *big.Int
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Origin common.Address
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Coinbase common.Address
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BlockNumber *big.Int
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Time *big.Int
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GasLimit uint64
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GasPrice *big.Int
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Value *big.Int
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Debug bool
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EVMConfig vm.Config
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State *state.StateDB
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GetHashFn func(n uint64) common.Hash
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}
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// sets defaults on the config
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func setDefaults(cfg *Config) {
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if cfg.ChainConfig == nil {
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cfg.ChainConfig = ¶ms.ChainConfig{
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ChainId: big.NewInt(1),
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HomesteadBlock: new(big.Int),
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DAOForkBlock: new(big.Int),
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DAOForkSupport: false,
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EIP150Block: new(big.Int),
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EIP155Block: new(big.Int),
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EIP158Block: new(big.Int),
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}
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}
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if cfg.Difficulty == nil {
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cfg.Difficulty = new(big.Int)
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}
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if cfg.Time == nil {
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cfg.Time = big.NewInt(time.Now().Unix())
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}
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if cfg.GasLimit == 0 {
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cfg.GasLimit = math.MaxUint64
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}
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if cfg.GasPrice == nil {
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cfg.GasPrice = new(big.Int)
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}
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if cfg.Value == nil {
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cfg.Value = new(big.Int)
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}
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if cfg.BlockNumber == nil {
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cfg.BlockNumber = new(big.Int)
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}
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if cfg.GetHashFn == nil {
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cfg.GetHashFn = func(n uint64) common.Hash {
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return common.BytesToHash(crypto.Keccak256([]byte(new(big.Int).SetUint64(n).String())))
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}
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}
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}
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// Execute executes the code using the input as call data during the execution.
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// It returns the EVM's return value, the new state and an error if it failed.
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//
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// Executes sets up a in memory, temporarily, environment for the execution of
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// the given code. It makes sure that it's restored to it's original state afterwards.
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func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
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if cfg == nil {
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cfg = new(Config)
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}
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setDefaults(cfg)
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if cfg.State == nil {
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db, _ := ethdb.NewMemDatabase()
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cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(db))
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}
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var (
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address = common.StringToAddress("contract")
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vmenv = NewEnv(cfg)
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sender = vm.AccountRef(cfg.Origin)
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)
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cfg.State.CreateAccount(address)
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// set the receiver's (the executing contract) code for execution.
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cfg.State.SetCode(address, code)
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// Call the code with the given configuration.
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ret, _, err := vmenv.Call(
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sender,
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common.StringToAddress("contract"),
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input,
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cfg.GasLimit,
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cfg.Value,
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)
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return ret, cfg.State, err
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}
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// Create executes the code using the EVM create method
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func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
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if cfg == nil {
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cfg = new(Config)
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}
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setDefaults(cfg)
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if cfg.State == nil {
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db, _ := ethdb.NewMemDatabase()
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cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(db))
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}
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var (
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vmenv = NewEnv(cfg)
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sender = vm.AccountRef(cfg.Origin)
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)
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// Call the code with the given configuration.
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code, address, leftOverGas, err := vmenv.Create(
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sender,
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input,
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cfg.GasLimit,
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cfg.Value,
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)
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return code, address, leftOverGas, err
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}
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// Call executes the code given by the contract's address. It will return the
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// EVM's return value or an error if it failed.
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//
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// Call, unlike Execute, requires a config and also requires the State field to
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// be set.
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func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, error) {
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setDefaults(cfg)
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vmenv := NewEnv(cfg)
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sender := cfg.State.GetOrNewStateObject(cfg.Origin)
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// Call the code with the given configuration.
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ret, leftOverGas, err := vmenv.Call(
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sender,
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address,
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input,
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cfg.GasLimit,
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cfg.Value,
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)
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return ret, leftOverGas, err
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}
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135
core/vm/validator/runtime_test.go
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135
core/vm/validator/runtime_test.go
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@ -0,0 +1,135 @@
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package validator
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import (
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"math/big"
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"strings"
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"testing"
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"github.com/ethereum/go-ethereum/accounts/abi"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/ethdb"
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)
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func TestDefaults(t *testing.T) {
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cfg := new(Config)
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setDefaults(cfg)
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if cfg.Difficulty == nil {
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t.Error("expected difficulty to be non nil")
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}
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if cfg.Time == nil {
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t.Error("expected time to be non nil")
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}
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if cfg.GasLimit == 0 {
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t.Error("didn't expect gaslimit to be zero")
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}
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if cfg.GasPrice == nil {
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t.Error("expected time to be non nil")
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}
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if cfg.Value == nil {
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t.Error("expected time to be non nil")
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}
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if cfg.GetHashFn == nil {
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t.Error("expected time to be non nil")
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}
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if cfg.BlockNumber == nil {
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t.Error("expected block number to be non nil")
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}
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}
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func TestEVM(t *testing.T) {
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defer func() {
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if r := recover(); r != nil {
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t.Fatalf("crashed with: %v", r)
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}
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}()
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Execute([]byte{
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byte(vm.DIFFICULTY),
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byte(vm.TIMESTAMP),
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byte(vm.GASLIMIT),
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byte(vm.PUSH1),
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byte(vm.ORIGIN),
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byte(vm.BLOCKHASH),
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byte(vm.COINBASE),
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}, nil, nil)
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}
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func TestExecute(t *testing.T) {
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ret, _, err := Execute([]byte{
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byte(vm.PUSH1), 10,
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byte(vm.PUSH1), 0,
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byte(vm.MSTORE),
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byte(vm.PUSH1), 32,
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byte(vm.PUSH1), 0,
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byte(vm.RETURN),
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}, nil, nil)
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if err != nil {
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t.Fatal("didn't expect error", err)
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}
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num := new(big.Int).SetBytes(ret)
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if num.Cmp(big.NewInt(10)) != 0 {
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t.Error("Expected 10, got", num)
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}
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}
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func TestCall(t *testing.T) {
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db, _ := ethdb.NewMemDatabase()
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state, _ := state.New(common.Hash{}, state.NewDatabase(db))
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address := common.HexToAddress("0x0a")
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state.SetCode(address, []byte{
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byte(vm.PUSH1), 10,
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byte(vm.PUSH1), 0,
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byte(vm.MSTORE),
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byte(vm.PUSH1), 32,
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byte(vm.PUSH1), 0,
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byte(vm.RETURN),
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})
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ret, _, err := Call(address, nil, &Config{State: state})
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if err != nil {
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t.Fatal("didn't expect error", err)
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}
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num := new(big.Int).SetBytes(ret)
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if num.Cmp(big.NewInt(10)) != 0 {
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t.Error("Expected 10, got", num)
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}
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}
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func BenchmarkCall(b *testing.B) {
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var definition = `[{"constant":true,"inputs":[],"name":"seller","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"abort","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"value","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[],"name":"refund","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"buyer","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmReceived","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"state","outputs":[{"name":"","type":"uint8"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmPurchase","outputs":[],"type":"function"},{"inputs":[],"type":"constructor"},{"anonymous":false,"inputs":[],"name":"Aborted","type":"event"},{"anonymous":false,"inputs":[],"name":"PurchaseConfirmed","type":"event"},{"anonymous":false,"inputs":[],"name":"ItemReceived","type":"event"},{"anonymous":false,"inputs":[],"name":"Refunded","type":"event"}]`
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var code = common.Hex2Bytes("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")
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abi, err := abi.JSON(strings.NewReader(definition))
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if err != nil {
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b.Fatal(err)
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}
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cpurchase, err := abi.Pack("confirmPurchase")
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if err != nil {
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b.Fatal(err)
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}
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creceived, err := abi.Pack("confirmReceived")
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if err != nil {
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b.Fatal(err)
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}
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refund, err := abi.Pack("refund")
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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for j := 0; j < 400; j++ {
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Execute(code, cpurchase, nil)
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Execute(code, creceived, nil)
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Execute(code, refund, nil)
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}
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}
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}
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